Thermodynamic Behavior of Time-Dependent Wormholes in Palatini $f(R)$ Gravity
General Relativity and Quantum Cosmology
2021-01-19 v1
Abstract
In the frame work of Palatini approach to modified theories of gravity, we attempt to investigate the thermodynamic behavior of time-dependent wormhole geometries. By considering an evolving wormhole spacetime, we find the field equations in Palatini gravity. The energy density and pressure are redefined in order to satisfy the continuity equation. To discuss the thermodynamic behavior, an expression for the variation of total entropy is obtained. Then, we extend our discussions to apparent and event horizons of evolving wormholes. We employ the radius of apparent and event horizons to determine the validity of generalized second law (GSL) of thermodynamics which states that the variation of total entropy is non-negative.
Keywords
Cite
@article{arxiv.2101.06372,
title = {Thermodynamic Behavior of Time-Dependent Wormholes in Palatini $f(R)$ Gravity},
author = {Hamidreza Saiedi},
journal= {arXiv preprint arXiv:2101.06372},
year = {2021}
}